package cn.school.mybatis.util;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class DateUtil {
	private DateUtil() {
	}

	final static SimpleDateFormat DF = new SimpleDateFormat("yyyy-MM-dd");

	public static String toString(Date d) {
		if (d == null)
			return "";
		return DF.format(d);
	}

	public static Date toDate(String d) {
		if (d == null)
			return null;
		try {
			return DF.parse(d);
		} catch (ParseException e) {
			//e.printStackTrace();
		}
		return null;
	}

	public static void main(String[] args) {
		String s = "2020-4-1";
		System.out.println(toDate(s));
	}
}
